| European Countries by First 2 Letters | 0 | - | 4.95 | 531,767 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,587 |
| Official European Union Languages | 0 | - | 4.97 | 239,462 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,469 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,251 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,229 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 42,003 |
| Celtic Nations | 0 | - | 4.61 | 47,065 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,473 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,893 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,220 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 175,042 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,626 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,344 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 360,210 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,696 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,810 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,576 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,619 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,302 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,723 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,965 |
| States of Germany | 0 | - | 4.95 | 154,048 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,550 |
| Regions of Italy | 0 | - | 4.92 | 76,737 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,659 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,049 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,620 |
| Champions League Winners | 0 | - | 4.92 | 1,013,489 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,710 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,699 |
| Word Scramble - European Countries | 0 | - | 4.73 | 142,160 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 116,292 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,177 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,484 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,464 |
| Slavic Languages | 0 | - | 4.68 | 54,621 |
| Departments of France | 0 | - | 4.93 | 54,875 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,708 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,705 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,592 |
| England or Wales? | 0 | - | 4.94 | 45,901 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,676 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 280,326 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,054 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,646 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,797 |
| History of Russia Quiz | 0 | - | 4.47 | 31,986 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,835 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,014 |
| History of Italy | 0 | - | 4.55 | 32,113 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,213 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,785 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,383 |
| Australian Capitals | 0 | - | 4.92 | 62,806 |
| Europe Map Quiz | 0 | - | 5.00 | 4,781,137 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,433 |
| Capitals of French Regions | 0 | - | 4.45 | 16,154 |
| Capitals of German States | 0 | - | 4.74 | 29,037 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,501 |
| The Trojan War | 0 | - | 4.83 | 39,936 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 650,784 |
| Name that Greek Letter | 0 | - | 4.93 | 324,695 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,695 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,494 |
| Roman Emperors | 0 | - | 4.95 | 120,919 |
| Oceania Map Quiz | 0 | - | 4.98 | 658,011 |
| European Geography By Letter - A | 0 | - | 4.52 | 147,685 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 121,063 |
| European Geography By Letter - C | 0 | - | 4.43 | 122,969 |
| European Geography By Letter - D | 0 | - | 4.50 | 110,072 |
| European Geography By Letter - L | 0 | - | 4.52 | 114,734 |
| European Geography By Letter - M | 0 | - | 4.69 | 132,069 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,863 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,376 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,591 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,284 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,454 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,108 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,404 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,367 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,210 |
| Country Codes of Europe | 0 | - | 3.43 | 13,786 |
| Regions of France | 0 | - | 4.70 | 121,773 |
| France Immigration by Country | 0 | - | 4.70 | 76,838 |
| Famous Germans | 0 | - | 4.50 | 55,683 |
| German Groups of Things | 0 | - | 4.47 | 38,601 |
| Germany True or False? | 0 | - | 4.61 | 48,966 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,344 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,195 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,642 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,382 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,660 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,451,163 |
| Asia Map Quiz | 0 | - | 4.99 | 923,193 |
| Africa Map Quiz | 0 | - | 5.00 | 2,126,204 |
| European Physical Geography | 0 | - | 4.26 | 33,572 |
| Geography of Russia | 0 | - | 4.57 | 21,576 |
| History of Austria | 0 | - | 4.70 | 17,954 |
| Geography of the French Empire | 0 | - | 4.45 | 27,198 |
| The French Revolution | 0 | - | 4.47 | 24,113 |
| France Multiple Choice | 0 | - | 4.39 | 40,812 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,545 |
| Olympian Gods Quiz | 0 | - | 4.96 | 503,040 |
| The Vikings! | 0 | - | 4.46 | 28,393 |
| The Portuguese Empire | 0 | - | 4.58 | 12,095 |
| American to British Word Translation | 0 | - | 4.14 | 139,550 |
| Languages of the United Kingdom | 0 | - | 4.14 | 41,024 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 51,292 |
| Australia Map Quiz | 0 | - | 4.95 | 345,796 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 213,485 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,846 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,318 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,762 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 116,765 |
| The Only European Country ... | 0 | - | 4.91 | 218,412 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,184 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,081 |
| Presidents of France | 0 | - | 4.25 | 24,300 |
| History of France | 0 | - | 4.61 | 57,476 |
| Ancient Greek Words | 0 | - | 4.93 | 112,262 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,317 |
| Kings of Spain Quiz | 0 | - | 4.14 | 14,094 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,272 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,772 |
| Name Every Beatles Song | 0 | - | 4.97 | 237,895 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,574 |
| Champions League Top 4 | 0 | - | 4.77 | 138,299 |
| South and Central Asia Map Quiz | 0 | - | 4.94 | 99,697 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,386,303 |
| Countries of Africa | 0 | - | 5.00 | 2,553,322 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 47,637 |
| African East Coast | 0 | - | 4.96 | 96,574 |
| Western Africa Map Quiz | 0 | - | 4.97 | 74,427 |
| Numbers Tile Select Quiz | 0 | - | 4.98 | 75,167 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,449 |
| Australian States and Territories | 0 | - | 4.96 | 142,639 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,449 |
| Australia True or False | 0 | - | 4.87 | 57,075 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,868 |
| Top 10 Most Populous American Countries | 0 | - | 4.96 | 144,653 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 130,413 |
| Uruguay Country Quiz | 0 | - | 4.84 | 31,714 |
| North America Map Quiz | 0 | - | 4.98 | 250,824 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,927 |
| United States Map Quiz | 0 | - | 4.98 | 4,168,029 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 55,472 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 43,086 |
| European Geography By Letter - E | 0 | - | 4.23 | 114,804 |
| European Geography By Letter - F | 0 | - | 4.15 | 94,111 |
| European Geography By Letter - H | 0 | - | 4.30 | 96,916 |
| European Geography By Letter - G | 0 | - | 4.27 | 103,617 |
| European Geography By Letter - I | 0 | - | 4.07 | 96,310 |
| European Geography By Letter - K | 0 | - | 4.15 | 70,946 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,362 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,417 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,830 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 51,707 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,302 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,852 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 220,270 |
| European Geography A-Z | 0 | - | 4.29 | 49,437 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,624 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,096 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,955 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,649 |
| Slavic Countries | 0 | - | 4.96 | 112,196 |
| Austria... or Australia? | 0 | - | 4.68 | 104,669 |
| Famous French People | 0 | - | 4.07 | 36,012 |
| Word Chain - France | 0 | - | 4.38 | 42,899 |
| Geography of Germany | 0 | - | 4.35 | 17,248 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,177 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,008 |
| Italian Foods | 0 | - | 4.30 | 73,146 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,565 |
| The Mafia Quiz | 0 | - | 4.46 | 23,412 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 439,119 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,416 |
| History of The Netherlands | 0 | - | 4.46 | 17,530 |
| History of Spain | 0 | - | 4.23 | 21,147 |
| Languages of Spain | 0 | - | 4.36 | 23,398 |
| Canary Islands | 0 | - | 4.62 | 17,514 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 29,970 |
| British to American Word Translation | 0 | - | 3.74 | 255,277 |
| British Foods by Description | 0 | - | 3.94 | 48,367 |
| British Spellings | 0 | - | 4.06 | 99,564 |
| British Groups of Things | 0 | - | 4.25 | 82,975 |
| British and American Word Differences | 0 | - | 2.63 | 46,916 |
| British Acronyms | 0 | - | 4.40 | 45,902 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,085 |
| British Monopoly Board | 0 | - | 4.52 | 41,240 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 32,056 |
| British Geography Quiz #2 | 0 | - | 4.29 | 28,190 |
| Bridges of London | 0 | - | 4.17 | 10,135 |
| British Sport Trivia | 0 | - | 4.37 | 20,511 |
| Famous Welsh People | 0 | - | 4.34 | 11,652 |
| East Asia Cities Map Quiz | 0 | - | 4.96 | 110,635 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 154,370 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 99,729 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 109,005 |
